Physics 9702 · AS & A Level · Density and pressure

Density and pressure — practice question

A flat, thin plate with area $0.036\,\text{m}^2$ lies below the surface of a liquid of density $930\,\text{kg m}^{-3}$. The force on one face of the plate caused by the liquid pressure is $290\,\text{N}$. How far beneath the liquid surface is the plate?

  • A$0.88\,\text{m}$
  • B$1.1\,\text{m}$
  • C$1.8\,\text{m}$
  • D$8.7\,\text{m}$

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